Optimization of Biogas Production from Anaerobic Fermentation of Corn Stalk by Combination Alkali Pretreatment

3rd International Symposium on Resource Exploration and Environmental Science

生态环境科学

Zhao, Ling^1 ; Chen, Kang^1 ; Li, Jinyang^1

College of Engineering, Shenyang Agricultural University, Shenyang, China^1

关键词: Alkali concentrations;    Alkali pretreatment;    Anaerobic fermentation;    Optimum combination;    Pretreatment process;    Process parameters;    Regression equation;    Technological conditions;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/300/5/052017/pdf
DOI  :  10.1088/1755-1315/300/5/052017

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

In order to explore the influence of alkali concentration, solid-liquid ratio, pretreatment time and component ratio on biogas production from corn stalk anaerobic fermentation in the pretreatment process of combined alkali, four factors and five levels of quadratic orthogonal rotary combination design experiment were used to optimize the technological conditions for biogas production from corn stalk anaerobic fermentation by combined alkali pretreatment, and corresponding mathematical model is established. The results showed that the regression equation was significant and the fitting condition was good. The four factors affected the biogas production of corn stalk in the order of composition ratio, treatment time, alkali concentration and solid-liquid ratio. The optimum combination of process parameters was as follows: alkali concentration was 6%, solid-liquid ratio was 1:5, treatment time was 4.5 days, component ratio was 1:1.25. Under the optimum conditions, the production of biogas from corn stalk anaerobic fermentation was the highest.